Peterbilt is expanding powertrain options, including all wheel drive capabilities with the Paccar PX-8 engine.


"The Paccar PX-8 engine partnered with all wheel drive provides customers maximum power and performance for utility, municipality and vocational applications," said Bill Jackson, Paccar vice president and Peterbilt general manager. "The combination also provides enhanced fuel economy, durability and overall low cost of operation."

Optimized for Peterbilt's Class 7 chassis, the Paccar PX-8 engine has a horsepower rating of up to 350 and up to 1,000 pounds-feet of torque. This 8.3-liter, six-cylinder engine offers two engine braking systems. A variable geometry turbo provides standard engine braking up to 125 horsepower, and an optional compression brake provides incremental braking horsepower.

The PX-8 engine with all-wheel-drive capabilities is available in Peterbilt Models 337 and 348. The Model 337 is available in both truck and tractor configurations with a GVW of 26,000-35,000 pounds. The Model 348 offers a GVW of 35,000-66,000 pounds and optional capacity ratings to suit almost any specialty vocation. It is available with 12,000- to 16,000-pound front axle ratings and is available in both truck and tractor configurations.

Both the 337 and 348 all-wheel-drive models are also available with the Paccar PX-6 and either Fuller manual or Allison automatic transmissions.

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